Fix config.h not being found during install

code/CMakeLists.txt

@@ -59,7 +59,7 @@ SET( PUBLIC_HEADERS
   ${HEADER_PATH}/camera.h
   ${HEADER_PATH}/color4.h
   ${HEADER_PATH}/color4.inl
-  ${HEADER_PATH}/config.h
+  ${CMAKE_BINARY_DIR}/include/assimp/config.h
   ${HEADER_PATH}/defs.h
   ${HEADER_PATH}/cfileio.h
   ${HEADER_PATH}/light.h